Furnace door



June 2o, 195o l.; R RI'CHARDS 2,512,439

FURNACE DOQR Filed June 8, 1948 f I f 4 lll /5 /4 //QQLE'IEEW/e@ /f /0 uI|| NHA I s Patented June 20, 1950 -1 t y Edwin R. Richards, Provo,Utah, assgnor to :A

Geneva Steel Company, a corporation of Bela- Ware Application June 8,1948, Serial No. 31,800

2 Claims. (C1. 122-498) This invention relates to improvements infurnace doors of the type which are -water cooled and lined withrefractory brickwork.

An object of the invention is to provide im proved furnace doors of theaforementioned type in which the brickwork is fixed in place by a noveland efficient means, namely by metal plates which are placed between thecourses of bricks and are mechanically interlocked with the water cooleddoor frame.

A further object of the invention is to provide improved furnace doorsin which the courses of refractory bricks are alternated with steelplates that are mechanically interlocked with the door frame and securethe bricks in place initially by friction and after heating by bondingor fufusion.

In accomplishing these and other objects of the invention, I haveprovided improved details of structure, a preferred form of which isshown in the accompanying drawing, in which:

Figure 1 is a side elevational view of the interior of a water cooledrefractory lined furnace door embodying features of the presentinvention;

Figure 2 is a horizontal sectional view taken substantially on lineII--II of Figure 1;

Figure 3 is a vertical sectional view taken substantially on lineIII-III of Figure l; and

Figures 4 and 5 are top plan views of plates adapted to be laid betweenthe courses of brickwork in the door.

Referring more in detail to the drawing:

There is shown at l a furnace door frame which has a plurality ofvertical passages I2 for circulating cooling water. The passages areseparated by vertical slots I3 which pass through the frame. The insideface of the door is lined with refractory brickwork I4 laid inhorizontal courses. The structural details o-f the door frame and itsmounting per se are not part of the present invention; hence they arenot shown in greater detail.

In accordance with the present invention a series of horizontallydisposed metal plates I5 and I6 are placed end to end between successivecourses of bricks I4 as the bricks are laid. Said plates preferably Iareformed of steel sheet of 10 to 16 gauge cut or stamped to the properconfiguration. The configurations of plates suitable for a typicaldesign of door are shown in detail in Figures 4 and 5. Plates 15 (Figure4) include a body portion I'I that separates the bricks, a neck I8.which passes through one of the slots I3 and a tab I9 adapted to bebent into the plane of the outer face of the door frames. Plate I6(Figure 5) includes similar parts, namely a body Ila, a neck Ia and atab I9a, but the neck and tab are positioned differently with respect tothe length of the body. The positioning of the necks and tabs may bevaried as required to enable the necks to match the position of theslots I3 in the door, the positions shown being those suitable for theparticular design of door illustrated.

In constructing a furnace door according to the present invention, aftereach course of bricks is laid, a series of plates I5 and I6 are laidthereon. For the door illustrated two plates I5 and two plates I6constitute the series, the plates l5 being laid at the ends of theseries and the plates I6 in the center in order that necks I8 and lilamatch slots I3. It is seen that the tabs may be inserted through theslots when plates are tilted from the horizontal. After the plates areinstalled, the tabs are bent into the plane of the outer face of theframe and provide a mechanical interlock therewith. Initially the platesfrictionally retain the bricks in place. After the furnace is heated,the plates fuse with the bricks and thus furnish a solid fusedrefractory lining interlocked with the door frame.

While I have shown and described only a r single embodiment of thestructure, it is apparent that modifications may arise. Therefore, I donot wish to be limited to the disclosure set forth but only by the scopeof the appended claims.

`I claim:

1. In a furnace door, a metal frame having vertical passages forcirculating cooling water and vertical slots between said passages, alining of refractory brickwork laid in horizontal courses on the innerface of said frame, and horizontally disposed thin flat sheet metalplates between successive courses of said brickwork, said plates havingnecks extending through said slots and tabs on the outer extremities ofsaid necks bent intoI the plane of the outer facel of said frame andmechanically interlocking said plates with said frame.

2. In a furnace door, a metal frame having vertical passages forcirculating cooling water and 3 vertical slots between said passages, alining of refractory brickwork laid in horizontal courses on the innerface of said frame, and horizontally disposed thin at sheet metal platesbetween successive courses of said brickwork, said plates having necksextending through said slots and tabs on the outer extremities of saidnecks bent into the plane of the outer face of said frame andmechanically interlocking said plates with said frame, said platesinitially holding said brick- 10 work in place frictionally and afterheating holding saidbrickwork inplace by being fused therewith. 7

"EDWIN`R; RICHARDS.

REFERENCES CITED le of this patent:

Number Number 4 UNITED STATES PATENTS Name Date Hooper Feb. '1, 1911Hemmer Jan. 5, 1915 Williams Nov. 6, 1928 Carlson Dec. 3, 1929 MorlockMay 16, 1939 Stewart Jan. 16, 1940 Kuhner et al. Apr. 29, 1941 SontzAug. 26, 1947 FOREIGN PATENTS Country Date Great Britain Oct. 13, 1932The following references are of recordeinrthe-

